wifischedule: remove package arch dependency

Remove package architecture dependency cause wifischedule is "shell script only"

Signed-off-by: Dirk Brenken <dev@brenken.org>

net/wifischedule/Makefile

@@ -16,7 +16,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=wifischedule
 PKG_VERSION:=1
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 PKG_LICENSE:=PRPL
 
 PKG_MAINTAINER:=Nils Koenig <openwrt@newk.it> 
@@ -28,6 +28,7 @@ define Package/wifischedule
   TITLE:=Turns WiFi on and off according to a schedule
   SECTION:=net
   CATEGORY:=Network
+  PKGARCH:=all
 endef
 
 define Package/wifischedule/description
@@ -38,6 +39,12 @@ define Package/wifischedule/conffiles
 /etc/config/wifi_schedule
 endef
 
+define Build/Prepare
+endef
+
+define Build/Configure
+endef
+
 define Build/Compile
 endef